asymetric speeds over gigE link

[security]

Tom Judge wrote:
> Have you tried upping the MTU, that is if the cards and switch you are
> using support it.  I have seen significant speed increases (FreeBSD -
> FreeBSD) in some scenario's twice the through put with an MTU of 8192.
>
> I have also seen 700Mb/s sustained FreeBSD - FreeBSD using the openssh
> HPN patch set and no extra tuning of the network stack.  Which makes
> me think that maybe the linux stack needs some tuning?
>
> Just some ideas
>
> Tom 
Thanks Tom.  I played with "jumbo's", but the switch didn't seem to like
it.  I'll also chase this from the linux side too.  I may be able to
bring up a scratch box with 6.2, and see what freebsd <-> freebsd perf
seems like.

jim